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Chromosomal Mechanisms in the Evolution of Artiodactyls

Published online by Cambridge University Press:  25 May 2016

Neil B. Todd*
Affiliation:
Department of Biology, Boston University, Boston 02215.
*
Correspondence to: P.O. Box 5, Newtonville, Massachusetts 02160.

Abstract

Evidence is presented that primitive artiodactyls had a diploid number of 14. The higher diploid numbers of most living artiodactyls are interpreted as resulting from karyotypic fissioning at the times of past adaptive radiations. The fossil record appears to support this contention.

An evolutionary sequence of unusual X chromosome transformations has been deduced from the differences that exist among extant species. From these, and from interrelationships of karyotypes, certain phylogenetic revisions are suggested.

Type
Research Article
Copyright
Copyright © The Paleontological Society 

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References

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